From: colin at grandecom dot com
Operating system: Solaris 2.8
PHP version: 4.3.3
PHP Bug Type: Program Execution
Bug description: All exec, passthru, system, shell execution commands fail
intermittently.
Description:
------------
At certain times (no discernible load, nor any unusually
high memory or swap usage, etc.) all shell exec commands
fail. Typically it will last a short period of time, and
then all commands work fine. Restarting apache does not
appear to cure or improve the situation. Below are my
particulars.
My configure line:
./configure --with-apxs=/usr/local/apache/bin/apxs
--with-oracle=/opt/oracle --with-snmp=/usr/local --with-curl=/opt
--with-gd --with-zlib-dir=/usr/local/lib
Other information:
Sun E250, 2x296mhz, 1024MB RAM, gcc 2.95.2
Changes to php.ini from php.ini-dist:
register_globals = On
Here are some error examples from various execs:
Warning: shell_exec(): Unable to execute 'nslookup -timeout=3 10.130.0.1
2>/dev/null' in /usr/local/apache/htdocs/my.php on line 39
Warning: system(): Unable to fork [/opt/qip/usr/bin/qping -v -r 3 -t 250
10.130.2.163] in /usr/local/apache/htdocs/my.php on line 79
Warning: passthru(): Unable to fork [/opt/qip/usr/bin/qping -v -r 3 -t 250
10.130.2.163] in /usr/local/apache/htdocs/my.php on line 78
Reproduce code:
---------------
echo "<pre>"; system("ping -s $ip 56 10"); echo "</pre>";
Expected result:
----------------
Warning: system(): Unable to fork [ping -s 10.130.2.163 56 10] in
/usr/local/apache/htdocs/ping.php on line 55
Actual result:
--------------
Command simply doesn't execute, program continues without
a problem or error.
--
Edit bug report at http://bugs.php.net/?id=25480&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=25480&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=25480&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=25480&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=25480&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=25480&r=needtrace
Try newer version: http://bugs.php.net/fix.php?id=25480&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=25480&r=support
Expected behavior: http://bugs.php.net/fix.php?id=25480&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=25480&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=25480&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=25480&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=25480&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=25480&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=25480&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=25480&r=gnused
